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<table width="100%" summary="page for RetSchool"><tr><td>RetSchool</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Return to Schooling </h2>

<h3>Description</h3>

<p>a panel of 48 observations  from 1970   to 1986
</p>
<p><em>number of observations</em> :  5225
</p>
<p><em>observation</em> :  individuals
</p>
<p><em>country</em> :  United States
</p>


<h3>Usage</h3>

<pre>data(RetSchool)</pre>


<h3>Format</h3>

<p>A time serie containing :
</p>

<dl>
<dt>wage76</dt><dd><p>wage in 1876</p>
</dd>
<dt>grade76</dt><dd><p>grade level in 1976</p>
</dd>
<dt>exp76</dt><dd><p>experience 1n 1976</p>
</dd>
<dt>black</dt><dd><p>black ?</p>
</dd>
<dt>south76</dt><dd><p>lived in south in 1976 ?</p>
</dd>
<dt>smsa76</dt><dd><p>lived in smsa in 1976 ?</p>
</dd>
<dt>region</dt><dd><p>region, a factor with levels (un,midatl,enc,wnc,sa,esc,wsc,m,p)</p>
</dd>
<dt>smsa66</dt><dd><p>lived in smsa in 1966 ?</p>
</dd>
<dt>momdad14</dt><dd><p>lived with both parents at age 14 ?</p>
</dd>
<dt>sinmom14</dt><dd><p>lived with mother only at age 14 ?</p>
</dd>
<dt>nodaded</dt><dd><p>father has no formal education ?</p>
</dd>
<dt>nomomed</dt><dd><p>mother has no formal education ?</p>
</dd>
<dt>daded</dt><dd><p>mean grade level of father</p>
</dd>
<dt>momed</dt><dd><p>mean grade level of mother</p>
</dd>
<dt>famed</dt><dd><p>father's and mother's education, a factor with 9 levels</p>
</dd>
<dt>age76</dt><dd><p>age in 1976</p>
</dd>
<dt>col4</dt><dd><p>is any 4-year college nearby ?</p>
</dd>
</dl>



<h3>Source</h3>

<p>Kling, Jeffrey R. (2001) &ldquo;Interpreting Instrumental Variables Estimates of the Return to Schooling&rdquo;, <em>Journal of Business and Economic Statistics</em>, <b>19(3)</b>, july, 358&ndash;364.
</p>
<p>Dehejia, R.H.  and  S.  Wahba (2002) &ldquo;Propensity-score Matching Methods for Nonexperimental Causal Studies&rdquo;, <em>Restat</em>, 151&ndash;161.
</p>


<h3>References</h3>

<p>Cameron, A.C.  and  P.K.  Trivedi (2005) <em>Microeconometrics : methods and applications</em>, Cambridge.
</p>


<h3>See Also</h3>

<p><code>Index.Source</code>, <code>Index.Economics</code>, <code>Index.Econometrics</code>, <code>Index.Observations</code>,
</p>
<p><code>Index.Time.Series</code></p>


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